- Birthdate: 6 May 1971
- Birthplace: Nykøbing, Denmark
- Other clubs: Navskov (1986-90), Helsingør (1991-93), Næstved (1993-94), Ølstykke (1994-95), Hvidovre (1995-97), Ikast (loan 1998), Wolverhampton Wanderers (loan 1999), Farum (2002-03) Hellerup IK (2003), Frem (2003-07 + 2008)
- Bought from: Hvidovre
- Signed for LFC: £400,000, 01.08.1997
- International caps: Denmark U-21
- Contract expiry: 01.07.2002
- LFC league games/goals: 0 / 0
- Total LFC games/goals: 0 / 0
Danish 'keeper, who sat on Liverpool's bench in over 50 matches, but never made an appearance. H had an extreme case of bad luck in a Merseyside derby at Anfield on 27th September 1999. Sander Westerveld was sent off, but as the Reds had used all three substitutes Nielsen could not go on. His shirt did make it onto the pitch however, for stand in keeper Steve Staunton.
He returned to Denmark in 2003 before retiring in 2008 to take a political science degree. In April 2019 was a goalkeeping coach at Nordvest.
Appearances per season
A more detailed look at the player's appearances
||On the bench